Envelop.



E.R.LUECK,Jn.

ENVELOF.

APPLICATION FILED JUNE23. 1915 1,198,362. PatentedSept. 12,1916. &

Swuzwtoz 1 UNITED STATES PATENT OFFICE.

EDWARD R. LUECK, JR., OF HOWE, NORTH DAKOTA.

ENVELOP.

Application filed June 23, 1915.

To all whom it may concern Be it known that L'EDWARD R. LUECK, Jr., a citizen of the United States, residing at Howe, in the county of, Morton and State of North Dakota, have invented new and useful'Improvements in Envelops, of which the following is a specification.

This invention relates to a method for making envelops, and more particularly to a method for applying a thread thereto adapted to be used for easily and readily opening the envelop, and the method consists in the novel steps hereinafter described and claimed.

In the accompanying drawing: Figure 1 is a plan view of a. section of the paper from which the envelop blanks are cut, the

said figure having the outline of the-blanks indicated thereon and the threads positioned upon the paper and the blanks. The other figures are detail views of the features of the invention.

In the manufacture of the envelop a large sheet Or strip of paper 1 is used and the dies for cutting the envelop blanks (not shown) are so arranged that when the paper 1 is passed under or between them, the blanks :2 indicated in Fig. 1 are cut from the strip. It will be observed that the end portions of the blanks in adjacent rows overlap each other and the adjacent ends of the front sides of the envelop blanks in the adjacent rows are in alinement with each other longitudinally of the paper 1. At the time that the paper is manufactured, or when it is in a soft condition, that is to say, after the pulp has been passed through the rollers, but before the same is permitted to dry, threads 3 are laid along the lines of the adjacent ends of the fronts of the envelop blanks in adjacent rows. When the blanks '2 are cut from the paper 1 the threads are also severed and consequently each blank- 2 is provided at the oppositeends of its front side with sections of the thread 3. After applying the thread 3 it 1s pressed into the material constituting the paper or sheet 1, V

and thus the threadsare embedded at one side of the sheet but the pressure of embed- Specification of Letters Patent.

Patented Sept. 12, 1916.

Serial No. 35,850.

ding the threads is not sufiicient to push them entirely through the paper.

After the blanks 2 are cut as hereinbefore described they are folded up in any usual manner whereby the threads 3 are at the inner side of the envelop and extend from corner to corner across the ends thereof. After the envelop has been closed and sealed in the usual manner, it may be opened by grasping one'corner portion between the thumb and fore finger and tearing a part of the corner away from the envelop and thus an end portion of one of the threads 3 is pulled out of the end of the envelop and the same is opened. By this arrangement it will be observed that a person who receives the envelop, may at the time that he is observing the address, open the same and during the operation of opening the envelop there is no possibility of the contents of the envelop being torn or mutilated. Inasmuch as the threads are at the inner side of the envelop and do not project beyond the edges thereof, there is no possibility for the same tearing out while the envelop is in. transit.

From the above description taken in conjunction with the accompanying drawing, it will be seen that a simple and cheap envelop is provided and that the tearing thread may be easily and quickly manipulated for the )urpose of opening the envelop.

aving described the invention what is claimed is The method of making envelops consisting in applying threads to paper in parallel rows while the paper is in soft or plastic condition, then pressing the threads into one side of the body of the material of which the paper is composed and in the absence 

